package threading;
class MyThread extends Thread{
    @Override
    public void run() {
        while(true){
            System.out.println("hello t");
            try{
                Thread.sleep(1000);
            }catch(InterruptedException e){
                e.printStackTrace();
            }
        }
    }
}

public class ThreadDemo1 {

    public static void main(String[] args)  {
        Thread t = new MyThread();
        //start 会创建一个线程
        t.start();
        //run不会创建新的线程，run是在main 中执行的
        //t.run();
        while(true){
            System.out.println("hello main");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
